Vols. for 1862-81 called "2. sér., t. 1-20", but constitute v. 21.-40; for 1882-1900, called also "3. sér., t. 1-19"; for 1901-20, "4. sér., t. 1-20"; for 1922-July 1925, "5. sér., t. 1-3"; for Oct. 1925-27, "6. sér., t. 1-2."
Vols. for 1855-61 accompanied by separately paged supplement: Bulletin de bibliographie, d'histoire et de biographie mathématiques
